In this study we compared the antimicrobial activities of extracts from four under-utilized spices and
herbs including goraka (Garcinia quaesita), galangal (Alpinia galanga), lemon iron bark (Eucalyptus staigerana)
and mountain pepper (Tasmannia lanceolata) to the three common spices and herbs pepper (Piper
nigrum), rosemary (Rosmarinus officinalis), and oregano (Oreganum vulgare). Different extraction solvents
were used (water, ethanol and hexane) and extracts were tested against four food-borne bacteria (Escherichia
coli, Salmonella Typhimurium, Listeria monocytogenes and Staphylococcus aureus) using agar disc
diffusion and broth dilution assays.